Materiales

Tipos de ensayos

Tipo de probeta

Normas

ASTM D 1004-13 covers the determination of tear strength or tear resistance of flexible plastic film and sheeting. The site of tear is initiated by a high stress concentration caused by the 90° angle in the specimen. This test method aims to measure force to initiate tear for plastic films that do no exhibit brittle failure or do not elongate greater than 101.6 mm (4 in.).

For this test, we used a Model 3345 Electromechanical system with a 225 lb load cell. We found the 1 x 1 inch rubber-coated faces on the 50 lb capacity pneumatic side-action grips and a gripping pressure of 60 psi to work well for this application. In addition, a webcam was set up to track specimen failure. The images from the webcam were recorded into Instron's Bluehill® 3 software. This enables the user to view the test data along with a video of the actual live test.

We recommend reading and reviewing ASTM D1004 in order to fully understand the test setup, procedures, and results requirements.

5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.